Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of wireless communication, comprising: detecting, by a non-priority transmitter entity, a priority reservation reference signal (RRS) over a shared spectrum from a high-priority receiver entity, wherein the shared spectrum is shared by the non-priority transmitter entity with at least one high-priority communication pair, wherein the at least one high-priority communication pair includes a high-priority transmitter entity and the high-priority receiver entity; generating, by the non-priority transmitter entity, a non-priority channel estimate for a first channel between the non-priority transmitter entity and a non-priority receiver entity and a priority channel estimate for a second channel between the non-priority transmitter entity and the high-priority receiver entity; transmitting, by the non-priority transmitter entity, a demodulation reference signal, wherein the demodulation reference signal is one of: orthogonal or pseudo-orthogonal, to a priority demodulation reference signal concurrently transmitted by the high-priority transmitter entity on the shared spectrum; and transmitting, by the non-priority transmitter entity, data on the shared spectrum using a transmission precoder determined using the non-priority channel estimate and the priority channel estimate, wherein the transmission precoder aligns transmission of the data to minimize interference with the high-priority receiver entity.
A wireless communication method where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This method involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver. It then generates two channel estimates: one for its own connection to a non-priority receiver, and another for its connection to the high-priority receiver. The non-priority transmitter then sends a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a DMRS simultaneously sent by a high-priority transmitter on the same spectrum. Finally, it transmits data using a precoder derived from both channel estimates, specifically aligning the data transmission to minimize interference with the high-priority receiver.
2. The method of claim 1 , further including: yielding, by the non-priority transmitter entity, the transmitting of the data based on a failure to determine the transmission precoder.
This wireless communication method extends a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This includes the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, sending a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmitting data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, the non-priority transmitter will stop or "yield" its data transmission if it fails to successfully determine this precoder.
3. The method of claim 1 , wherein the alignment of the data by the transmission precoder nullifies the interference of the data transmission at the high-priority receiver entity.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, sending a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmitting data using a precoder derived from the channel estimates. The method specifically ensures that the precoder's alignment of the data transmission completely eliminates or "nullifies" any interference at the high-priority receiver.
4. The method of claim 1 , further including: receiving, by the non-priority transmitter entity, a receive subspace indicator from the high-priority transmitter entity, wherein the receive subspace indicator identifies a transmission subspace for the transmitting the data.
This wireless communication method extends a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This includes the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, sending a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmitting data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, the non-priority transmitter receives a "receive subspace indicator" from the high-priority transmitter, which specifies a particular transmission subspace to use when transmitting its data.
5. The method of claim 4 , wherein the transmission subspace includes one of: an interference subspace for aligning interference; or a receive subspace in which the high-priority receiver entity intends to receive priority communications.
This wireless communication method extends a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It includes the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, sending a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, transmitting data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver, and receiving a "receive subspace indicator" from the high-priority transmitter. This indicator identifies a transmission subspace for the data. The identified transmission subspace is specifically either an interference subspace, used for aligning interference, or a receive subspace where the high-priority receiver expects to receive its own priority communications.
6. The method of claim 1 , wherein the demodulation reference signal is pseudo-orthogonal, and further including one of: scrambling a demodulation reference sequence by a scrambling code associated with a priority level of the non-priority transmitter entity; or shifting the demodulation reference sequence by a cyclic shift associated with the priority level.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, and transmitting data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The non-priority transmitter transmits a demodulation reference signal (DMRS) that is pseudo-orthogonal to a high-priority DMRS. This pseudo-orthogonality is achieved by either scrambling the DMRS sequence using a code linked to the non-priority transmitter's priority level, or by cyclically shifting the DMRS sequence based on its priority level.
7. The method of claim 1 , wherein priority of the at least one high-priority communication pair and the non-priority transmitter entity is determined according to one of: a network operator associated with the at least one high-priority communication pair and the non-priority transmitter entity; a power class of a base station or user equipment (UE) of the at least one high-priority communication pair and the non-priority transmitter entity; a link direction; or any combination thereof.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, sending a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmitting data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. The priority level for both the high-priority communication pair and the non-priority transmitter is determined by factors such as the network operator, the power class of a base station or user equipment, the link direction (e.g., uplink or downlink), or any combination of these.
8. The method of claim 1 , wherein the demodulation reference signal is orthogonal to the priority demodulation reference signal.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, and transmitting data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The non-priority transmitter sends a demodulation reference signal (DMRS) that is specifically orthogonal to a priority DMRS concurrently transmitted by the high-priority transmitter on the shared spectrum.
9. The method of claim 1 , wherein the demodulation reference signal is pseudo-orthogonal to the priority demodulation reference signal.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, and transmitting data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The non-priority transmitter sends a demodulation reference signal (DMRS) that is specifically pseudo-orthogonal to a priority DMRS concurrently transmitted by the high-priority transmitter on the shared spectrum.
10. The method of claim 1 , further including scrambling a demodulation reference sequence by a scrambling code associated with a priority level of the non-priority transmitter entity, wherein the demodulation reference signal is pseudo-orthogonal.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, and transmitting data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The non-priority transmitter sends a demodulation reference signal (DMRS) that is pseudo-orthogonal to a high-priority DMRS. To achieve this, the DMRS sequence is scrambled using a scrambling code associated with the non-priority transmitter's priority level.
11. The method of claim 1 , shifting a demodulation reference sequence by a cyclic shift associated with a priority level of the non-priority transmitter entity, wherein the demodulation reference signal is pseudo-orthogonal.
This wireless communication method describes a system where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. It involves the non-priority transmitter detecting a priority reservation signal (RRS) from a high-priority receiver, generating its own channel estimate and a channel estimate to the high-priority receiver, and transmitting data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The non-priority transmitter sends a demodulation reference signal (DMRS) that is pseudo-orthogonal to a high-priority DMRS. To achieve this, the DMRS sequence is shifted by a cyclic shift associated with the non-priority transmitter's priority level.
12. An apparatus configured for wireless communication, comprising: means for detecting, by a non-priority transmitter entity, a priority reservation reference signal (RRS) over a shared spectrum from a high-priority receiver entity, wherein the shared spectrum is shared by the non-priority transmitter entity with at least one high-priority communication pair, wherein the at least one high-priority communication pair includes a high-priority transmitter entity and the high-priority receiver entity; means for generating, by the non-priority transmitter entity, a non-priority channel estimate for a first channel between the non-priority transmitter entity and a non-priority receiver entity and a priority channel estimate for a second channel between the non-priority transmitter entity and the high-priority receiver entity; means for transmitting, by the non-priority transmitter entity, a demodulation reference signal, wherein the demodulation reference signal is one of: orthogonal or pseudo-orthogonal, to a priority demodulation reference signal concurrently transmitted by the high-priority transmitter entity on the shared spectrum; and means for transmitting, by the non-priority transmitter entity, data on the shared spectrum using a transmission precoder determined using the non-priority channel estimate and the priority channel estimate, wherein the transmission precoder aligns transmission of the data to minimize interference with the high-priority receiver entity.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. The apparatus generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It also includes a transmitter configured to send a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a DMRS concurrently transmitted by a high-priority transmitter. The transmitter further sends data on the shared spectrum using a precoder determined from the two channel estimates, with the precoder specifically aligning the data transmission to minimize interference with the high-priority receiver.
13. The apparatus of claim 12 , further including: means for yielding, by the non-priority transmitter entity, transmission of the data based on a failure to determine the transmission precoder.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It also includes a transmitter configured to send a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a high-priority DMRS and to transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, the apparatus includes a mechanism to stop or "yield" the data transmission if it fails to determine the precoder.
14. The apparatus of claim 12 , wherein the alignment of the data by the transmission precoder nullifies the interference of the data transmission at the high-priority receiver entity.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It also includes a transmitter configured to send a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a high-priority DMRS and to transmit data using a precoder derived from the channel estimates. The apparatus ensures that the precoder's alignment of the data transmission completely eliminates or "nullifies" any interference at the high-priority receiver.
15. The apparatus of claim 12 , further including: means for receiving, by the non-priority transmitter entity, a receive subspace indicator from the high-priority transmitter entity, wherein the receive subspace indicator identifies a transmission subspace for the means for transmitting the data.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It also includes a transmitter configured to send a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a high-priority DMRS and to transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Furthermore, the apparatus includes a receiver configured to obtain a "receive subspace indicator" from the high-priority transmitter, which identifies a specific transmission subspace for transmitting the data.
16. The apparatus of claim 15 , wherein the transmission subspace includes one of: an interference subspace for aligning interference; or a receive subspace in which the high-priority receiver entity intends to receive priority communications.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It also includes a transmitter configured to send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS and to transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, it receives a "receive subspace indicator" from the high-priority transmitter, which identifies a transmission subspace for the data. This transmission subspace is defined as either an interference subspace for aligning interference or a specific receive subspace where the high-priority receiver intends to receive its priority communications.
17. The apparatus of claim 12 , wherein the demodulation reference signal is pseudo-orthogonal, the apparatus further including one of: means for scrambling a demodulation reference sequence by a scrambling code associated with a priority level of the non-priority transmitter entity; or means for shifting the demodulation reference sequence by a cyclic shift associated with the priority level.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It transmits data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The apparatus is configured to transmit a demodulation reference signal (DMRS) that is pseudo-orthogonal to a high-priority DMRS. This is achieved by either a scrambling unit that scrambles the DMRS sequence using a code associated with the non-priority transmitter's priority level, or a shifting unit that shifts the DMRS sequence by a cyclic shift linked to its priority level.
18. The apparatus of claim 12 , wherein priority of the at least one high-priority communication pair and the non-priority transmitter entity is determined according to one of: a network operator associated with the at least one high-priority communication pair and the non-priority transmitter entity; a power class of a base station or user equipment (UE) of the at least one high-priority communication pair and the non-priority transmitter entity; a link direction; or any combination thereof.
An apparatus for wireless communication includes a detector that identifies a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It generates two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It also includes a transmitter configured to send a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a high-priority DMRS and to transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. The apparatus determines the priority level for both the high-priority communication pair and the non-priority transmitter based on factors such as the associated network operator, the power class of a base station or user equipment, the link direction, or any combination thereof.
19. A non-transitory computer-readable medium having program code recorded thereon, the program code comprising: program code executable by a computer for causing the computer to detect, by a non-priority transmitter entity, a priority reservation reference signal (RRS) over a shared spectrum from a high-priority receiver entity, wherein the shared spectrum is shared by the non-priority transmitter entity with at least one high-priority communication pair, wherein the at least one high-priority communication pair includes a high-priority transmitter entity and the high-priority receiver entity; program code executable by the computer for causing the computer to generate, by the non-priority transmitter entity, a non-priority channel estimate for a first channel between the non-priority transmitter entity and a non-priority receiver entity and a priority channel estimate for a second channel between the non-priority transmitter entity and the high-priority receiver entity; program code executable by the computer for causing the computer to transmit, by the non-priority transmitter entity, a demodulation reference signal, wherein the demodulation reference signal is one of: orthogonal or pseudo-orthogonal, to a priority demodulation reference signal concurrently transmitted by the high-priority transmitter entity on the shared spectrum; and program code executable by the computer for causing the computer to transmit, by the non-priority transmitter entity, data on the shared spectrum using a transmission precoder determined using the non-priority channel estimate and the priority channel estimate, wherein the transmission precoder aligns transmission of the data to minimize interference with the high-priority receiver entity.
A non-transitory computer-readable medium stores program code for enabling wireless communication. When executed by a computer, the code causes a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. The code then causes the non-priority transmitter to generate two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. It further causes the non-priority transmitter to transmit a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a DMRS concurrently transmitted by a high-priority transmitter. Finally, the code causes the non-priority transmitter to transmit data on the shared spectrum using a precoder determined from the two channel estimates, with the precoder aligning the data transmission to minimize interference with the high-priority receiver.
20. The non-transitory computer-readable medium of claim 19 , further including: program code executable by the computer for causing the computer to yield, by the non-priority transmitter entity, transmission of the data based on a failure to determine the transmission precoder.
A non-transitory computer-readable medium stores program code for enabling wireless communication, where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This includes code that causes the non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver, generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, the medium includes program code that causes the non-priority transmitter to stop or "yield" its data transmission if it fails to successfully determine this precoder.
21. The non-transitory computer-readable medium of claim 19 , wherein the alignment of the data by the transmission precoder nullifies the interference of the data transmission at the high-priority receiver entity.
A non-transitory computer-readable medium stores program code for enabling wireless communication, where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This includes code that causes the non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver, generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates. The medium's program code specifically ensures that the precoder's alignment of the data transmission completely eliminates or "nullifies" any interference at the high-priority receiver.
22. The non-transitory computer-readable medium of claim 19 , further including: program code executable by the computer for causing the computer to receive, by the non-priority transmitter entity, a receive subspace indicator from the high-priority transmitter entity, wherein the receive subspace indicator identifies a transmission subspace for the program code executable by the computer for causing the computer to transmit the data.
A non-transitory computer-readable medium stores program code for enabling wireless communication, where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This includes code that causes the non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver, generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, the medium includes program code that causes the non-priority transmitter to receive a "receive subspace indicator" from the high-priority transmitter, which identifies a specific transmission subspace for the transmission of data.
23. The non-transitory computer-readable medium of claim 19 , wherein priority of the at least one high-priority communication pair and the non-priority transmitter entity is determined according to one of: a network operator associated with the at least one high-priority communication pair and the non-priority transmitter entity; a power class of a base station or user equipment (UE) of the at least one high-priority communication pair and the non-priority transmitter entity; a link direction; or any combination thereof.
A non-transitory computer-readable medium stores program code for enabling wireless communication, where a non-priority transmitter operates on a shared spectrum alongside high-priority devices. This includes code that causes the non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver, generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. The medium's program code determines the priority level for both the high-priority communication pair and the non-priority transmitter based on factors such as the associated network operator, the power class of a base station or user equipment, the link direction, or any combination of these.
24. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured: to detect, by a non-priority transmitter entity, a priority reservation reference signal (RRS) over a shared spectrum from a high-priority receiver entity, wherein the shared spectrum is shared by the non-priority transmitter entity with at least one high-priority communication pair, wherein the at least one high-priority communication pair includes a high-priority transmitter entity and the high-priority receiver entity; to generate, by the non-priority transmitter entity, a non-priority channel estimate for a first channel between the non-priority transmitter entity and a non-priority receiver entity and a priority channel estimate for a second channel between the non-priority transmitter entity and the high-priority receiver entity; to transmit, by the non-priority transmitter entity, a demodulation reference signal, wherein the demodulation reference signal is one of: orthogonal or pseudo-orthogonal, to a priority demodulation reference signal concurrently transmitted by the high-priority transmitter entity on the shared spectrum; and to transmit, by the non-priority transmitter entity, data on the shared spectrum using a transmission precoder determined using the non-priority channel estimate and the priority channel estimate, wherein the transmission precoder aligns transmission of the data to minimize interference with the high-priority receiver entity.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, where the spectrum is also used by a high-priority communication pair. It is also configured to generate two channel estimates: one for its connection to a non-priority receiver, and another for its connection to the high-priority receiver. The processor is further configured to transmit a demodulation reference signal (DMRS) that is either orthogonal or pseudo-orthogonal to a DMRS concurrently transmitted by a high-priority transmitter. Finally, it transmits data on the shared spectrum using a precoder determined from the two channel estimates, with the precoder aligning the data transmission to minimize interference with the high-priority receiver.
25. The apparatus of claim 24 , further including configuration of the at least one processor to yield, by the non-priority transmitter entity, transmission of the data based on a failure to determine the transmission precoder.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. It is also configured to generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, the processor is configured to stop or "yield" the data transmission if it fails to successfully determine this precoder.
26. The apparatus of claim 24 , wherein the alignment of the data by the transmission precoder nullifies the interference of the data transmission at the high-priority receiver entity.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. It is also configured to generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates. The apparatus ensures that the precoder's alignment of the data transmission completely eliminates or "nullifies" any interference at the high-priority receiver.
27. The apparatus of claim 24 , further including configuration of the at least one processor to receive, by the non-priority transmitter entity, a receive subspace indicator from the high-priority transmitter entity, wherein the receive subspace indicator identifies a transmission subspace for the configuration to transmit the data.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. It is also configured to generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Furthermore, the processor is configured to receive a "receive subspace indicator" from the high-priority transmitter, which identifies a specific transmission subspace for the transmission of data.
28. The apparatus of claim 27 , wherein the transmission subspace includes one of: an interference subspace for aligning interference; or a receive subspace in which the high-priority receiver entity intends to receive priority communications.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. It is also configured to generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. Additionally, it receives a "receive subspace indicator" from the high-priority transmitter, which identifies a transmission subspace for the data. This transmission subspace is defined as either an interference subspace for aligning interference or a specific receive subspace where the high-priority receiver intends to receive its priority communications.
29. The apparatus of claim 24 , wherein the demodulation reference signal is pseudo-orthogonal, the apparatus further including configuration of the at least one processor to one of: scramble a demodulation reference sequence by a scrambling code associated with a priority level of the non-priority transmitter entity; or shift the demodulation reference sequence by a cyclic shift associated with the priority level.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. It is also configured to generate its own channel estimate and a channel estimate to the high-priority receiver, and transmit data using a precoder derived from these estimates to minimize interference with the high-priority receiver. The apparatus's processor is configured to transmit a demodulation reference signal (DMRS) that is pseudo-orthogonal to a high-priority DMRS. This pseudo-orthogonality is achieved by either scrambling the DMRS sequence using a code linked to the non-priority transmitter's priority level, or by cyclically shifting the DMRS sequence based on its priority level.
30. The apparatus of claim 24 , wherein priority of the at least one high-priority communication pair and the non-priority transmitter entity is determined according to one of: a network operator associated with the at least one high-priority communication pair and the non-priority transmitter entity; a power class of a base station or user equipment (UE) of the at least one high-priority communication pair and the non-priority transmitter entity; a link direction; or any combination thereof.
An apparatus for wireless communication comprises a processor and memory. The processor is configured to enable a non-priority transmitter to detect a priority reservation signal (RRS) from a high-priority receiver on a shared spectrum, which is also used by a high-priority communication pair. It is also configured to generate its own channel estimate and a channel estimate to the high-priority receiver, send a demodulation reference signal (DMRS) that is orthogonal or pseudo-orthogonal to a high-priority DMRS, and transmit data using a precoder derived from the channel estimates to minimize interference with the high-priority receiver. The processor determines the priority level for both the high-priority communication pair and the non-priority transmitter based on factors such as the associated network operator, the power class of a base station or user equipment, the link direction, or any combination thereof.
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August 4, 2020
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